India tested on Thursday a new long-range missile capable of delivering a one-tonne nuclear warhead, a defence source said.

The 17-metre (56-foot) Agni V, with a range of more than 5,000 kilometres (3,100 miles), was launched at 8:05 (0235 GMT) from a test site off the eastern state of Orissa, said an official at the site who declined to be identified.

"It will take some time to know whether it has been successful," the official added.